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SQL> create or replace type Job as object (
2 firstname varchar2(30),
3 surname varchar2(30),
4 date_of_birth date,
5 end_date date,
6 item_count number(4),
7 items_retrieved varchar2(1)
8 )
9 /
Type created.
SQL> create table Task (
2 person_id number(10),
3 job_detail Job
4 );
Table created.
SQL>
SQL> set long 50000
SQL> select text from dba_views where view_name = 'DBA_TAB_COLUMNS'
2 /
TEXT
--------------------------------------------------------------------------------
select OWNER, TABLE_NAME,
COLUMN_NAME, DATA_TYPE, DATA_TYPE_MOD, DATA_TYPE_OWNER,
DATA_LENGTH, DATA_PRECISION, DATA_SCALE, NULLABLE, COLUMN_ID,
DEFAULT_LENGTH, DATA_DEFAULT, NUM_DISTINCT, LOW_VALUE, HIGH_VALUE,
DENSITY, NUM_NULLS, NUM_BUCKETS, LAST_ANALYZED, SAMPLE_SIZE,
CHARACTER_SET_NAME, CHAR_COL_DECL_LENGTH,
GLOBAL_STATS, USER_STATS, AVG_COL_LEN, CHAR_LENGTH, CHAR_USED,
V80_FMT_IMAGE, DATA_UPGRADED, HISTOGRAM
from DBA_TAB_COLS
where HIDDEN_COLUMN = 'NO'
1 row selected.
SQL> select column_name, hidden_column, data_type from DBA_TAB_COLS where table_name = 'TASK'
2 /
SQL> drop table Task;
Table dropped.
SQL>
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